Single Tube Holder Kit, 7-10 x 110mm Back Catalog number: 800259 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800138 Tube Holder Adapter for 5/8" Ends Price on request 801935 Charcoal Tube, Coconut Shell, Standard, 50/100mg, Price on request 800251 Tube Holder Kit, Dual Variable Manifold (Includes Price on request